Simple Authentication System with Express and JWT

This repository contains a basic authentication system implemented using Express.js and JSON Web Tokens (JWT). The system allows users to sign in, generates a token upon successful authentication, and provides a route to retrieve a list of users (excluding the authenticated user) using Postman or similar tools.

Installation

1. Clone the Repository:

   git clone https://github.com/Rohitkumar43/Simple-Authentication.git

   Clone the repository to your local machine using the above command.

2. Navigate to the Project Directory:

   cd Simple-Authentication

   Move into the cloned project directory.

3. Install Dependencies:

   npm install

   Install the necessary Node.js dependencies for the project.

4. Configuration:

   • Make sure to configure any environment variables if required. For instance, check and update the JWT secret key (jwtPassword) in the codebase as needed.

5. Start the Server:

   node app.js

   Launch the server to begin using the authentication system.

Usage

1. Sign In:

   • Endpoint: POST /signin
   • Input: Provide username and password in the request body.
   • Output: Receives a JWT token upon successful authentication.

   Example Request Body:

   {
     "username": "rohitkumar@gmail.com",
     "password": "123"
   }
   
   
   
   

Important Notes

This system uses an in-memory database with predefined user data for demonstration purposes. It should be replaced with a proper database in production. Ensure that the JWT password (jwtPassword) is kept secure. In production, consider using environment variables for sensitive information. The code logic for user authentication and retrieving user lists is basic and can be enhanced for a production-ready application, incorporating encryption, validation, error handling, etc.